Baffle-wall for locomotive fire-boxes.



H. D. SAVAGE.

BAPFLE WALL FOR LOGOMOTIVB FIRE BOXES.

APPLIGATION FILED JUNE 1, 1911.

1,033,953. Patented July 30, 1912.

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HARLOW DOW SAVAGE, 01 .QSHLahhlll, KENTUCKY.

BAFFLE-WALL FOE LOQQEEGTITE FIRE-EGXES.

Specification of ftetters Patent.

Application filed June 1, 1911. Serial no. 633G523;

Locomotive F ire-Boxes, of which the fol-i lowing is a specification.This invention relates to locomotive fire boxes.

The object of the invention is to improve the arrangement of fire brickforming such bafiie walls in order to facilitate repair of tubes, reducethe cost offire brick, and for convenience of handling.

In the accompanying drawing Figure 1 is avlongitudinalsection through afire box provided with my improved baflle wall; Fig. 2 is a transversesection on the line 2:2,

bafile walls for Fig. 1; Fig. 3 is a plan view of the battle;

and Figs. 4 and 5 are perspective views of the brick.

In the drawings .1 represents the front wall of the locomotive fire boxprovided with a firing opening 2; 3 represents the rear wall of saidfire box; 4 the top thereof, and 5 the grate. Extending between thefront and rear side walls are the'usual longitudinal tubes 6 forsupporting the battle wall. The fire box is provided with fourlongitudinal tubes 6, which, as shown, are connected in the circulationof the boiler and extend substantially parallel to the centrallongitudinal vertical plane of'the fire box, at least for those portionsof their length which support the battle wall, and are longitudinallyinclined, as shown in Fig. 1.

The bafile Wall 7 is formed by three rows of brick, to wit, a centralrow 8 and two side rows 10. The brick of the side rows are of specialshape, having their inner portions quite thickto provide portions 11extending downwardly between the tubes 6 and having the ends of saiddepending portion cut away in any desired manner, either on a bevel orconcave or other shaped rabbet or groove,-as shown at 12., to rest uponthe "tubes and bear thereagainst and prevent lateral movement of thebrick. The. outer ends l3 of'. these brick extend out to the -side walls1426*. the iii e box; and are thinner than their innerynds .so that thesuperior weight of theinnerends holds the brick in horizontalpositionwithout means for boldng up or supporting their outerends. Theinner ends of these brick are also beveled away from the top as shownat15. The brick 8 of the intermediate row have their ends beveled 01? bothfrom the top and bottom, so as to form bevel faces 1% oresting upon thetwo intermediate tubes 3 and have a part of the brick projectingdownwardly between said tubes to prevent lateral movement, butnevertheless so shaped that the bevel faces can. slide more or less upon the tube (3 underv contraction and expansion. The beveling away ofthe adjacent ends of the brick at the upper side permits the brick toslide past each other under ex treme expansion and contraction. The endsof adjacent brick are quite acute and slightly spaced apart so that theycan not readily fuse together. i

The side faces of the brick are preferably beveled or undercut slightly,as shown at 1.8, so that adjacent brick longitudinally of the beveloverlap somewhat so as to mutually support one another and prevent thesame from readily tipping or tiiting and at the same time forming abroken joint which offers more obstruction than won-id a straight jointto the passage of flame therethrougb. Preferably the lowermost brick ofeach row is provided with a projection or projections 19 for contactingwith the rear side plate 3 of the fire box and provide spaces'QO throughwhich flame can pass.

The brick described are of such simple construction that they can bereadily manufactured, handled and transported, and can be placed uponthe circulating tubes in any standard locomotive fire box withoutrequiring alteration therein or the application of attaching means,thereto. The baflle walls constructed front these brick have the sameadvantages, facilities and economy of replacement or repair, in the caseof replacement of a circulating tube or for other causes as any other,sectional battle. wall. At the same time the brick are of such sim pleshape that there is considerable economy in their manufacture, mndlingand transportation, as weil as from breakage,

the outer pairs of adjacent circulation tubes and their outer portionsextending in opposite directions out to the side .walls, the innerportions of said side brick being of greater thickness and weightthan-,therouter portions and projecting downwardly between thesupporting tubes, and intermediate brick placed end to end with saidside brick and resting upon and supported by the intermediatecirculation tubes, said intermediate brick having their lower end edgesbeveled and adapted to move laterally and ride upon the side brickduring expansion and contraction and [having portions extending downbetween said intermediate circulation tubes.

2. A locomotive fire box comprising in combination, side walls,longitudinally inclined circulation tubes between said side walls, and abafile'wall on said tubes comprising two op' osite rows of like sidebrick supported at t eir inner ends and intermediate their ends upon twoadjacent outer tubes and having theirv outer portions extending outtothe side walls, said-side brick having their inner portions of greaterthickness and weight than the outer portions and having a shoulder ontheir lower faces intermediate their ends and having the lower inner endcorners cut away, whereb portions of said brick extend downwar v be--tween the supporting tubes with the shouldisp acement being located endto end and being cut away at the upper edges of their facing ends toprovide acute facing end edges, and said intermediate brick beingadapted to be used either face 11 and to move laterally and ride uponsai side brick during expansion i and contraction.

In testimony whereof, I have hereunto set my hand.

HARLOW-DOW SAVAGE;

Witnesses: I

E. H. GARTRELL, M. L; MALZBERGER.

Copies of this patent may'be obtained for live cents each, by addressingthe Commissioner of Ia tents,

Washington, D. C.

